Effexor XR is an antidepressant that increases the concentration of neurotransmitters (serotonin and norepinephrine) in the central nervous system (brain). It is an extended release formulation of Effexor (venlafaxine) that is administered once daily.

What does Effexor XR treat

Major depression

Generalized anxiety disorder

Social anxiety disorder

Panic disorder in adults.

How effective is Effexor XR

In 8 and 12 week studies Effexor XR was better than placebo in reducing symptoms of depression.

The probability of not relapsing from panic disorder over a 6 month period was 76% with Effexor XR and 55% with placebo.

In 6 and 8 week studies Effexor XR was better than placebo in reducing symptoms of anxiety.

Effexor was more effective than placebo in reducing symptoms associated with social anxiety disorder.